Circuit/System Verification

Ignition ON.
Verify the scan tool Hazard Lamps Switch parameter changes between Active and Inactive while commanding the hazard lamps ON and OFF with the hazard warning switch.
- If the parameter does not change
  Refer to Hazard Warning Switch Malfunction .
- If the parameter changes
Verify all left and right turn signal lamps turn ON and OFF while commanding the hazard lamps ON and OFF with the hazard warning switch.
- If all turn signal lamps do not turn ON and OFF
  Refer to Turn Signal Lamps and/or Indicators Malfunction
- If all turn signal lamps turn ON and OFF
Verify the hazard warning switch backlighting turns ON and OFF while commanding the Hazard Lamps Switch Backlight ON and OFF with a scan tool.
- If the hazard warning switch backlighting does not turn ON and OFF
  Refer to Hazard Warning Switch Backlighting Malfunction .
- If the hazard warning switch backlighting turns ON and OFF
All OK.